Discourse is a system of interrelated meanings in which a set of signs are structured as a whole and their meanings are consolidated and social practices are formed. The interaction of "self" and "other" over constructed and reality becomes meaningful and understandable. Terrorism is one of the vague words in the international arena, which, because of the complexity of the concept and its implications, face a kind of crisis of meaning in defining and redefining territory. Definitions of terrorism and its dimensions appear to be derived from discursive and propaganda constructs rather than conformity with the objectivity and acceptance of the value / reality dualism. The article seeks to answer the question of what are the most important factors of the Islamic Republic of Iran's foreign policy in the Middle East. The present study investigates the Iranian discourse, ideals and myths and their impact on the foreign policy of the Islamic Republic of Iran. In order to achieve this goal, the relationship between discourse and foreign policy is briefly discussed first. In this section, while illustrating how this discourse was formed and shaped, it is stated that the discourse establishes a new Islamic-Iranian identity, thereby defining its national goals and interests based on Islamic identity and revolutionary discourse in the Middle East.